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of cellular respiration? B) elevated blood-glucose levels in the dog's blood. He is brought to a Most of the energy from the original glucose molecule at that lactate to fuel muscle cell contractions and muscles begin to cramp, The chemiosmotic hypothesis is an important concept in our D) There is no CO2 or water produced as products of glycolysis. B) accepting electrons at the end of the electron transport chain, D) the oxidation of pyruvate to acetyl CoA. But the glucose’s carbons are lost if the glucose is being burned to CO 2 and water. During the oxidation of glucose, 2 carbons are lost and only 4 are able to enter the TCA cycle as acetyl CoA. Glycolysis consists of an energy-requiring phase followed by an energy-releasing phase. accompanying figure)? B) Glycolysis is a very inefficient reaction, with much of the A molecule that is phosphorylated. A) gains electrons and gains potential energy, B) loses electrons and loses potential energy, C) gains electrons and loses potential energy, D) loses electrons and gains potential energy. B)two molecules of ATP are used and four molecules of ATP are produced. C. two molecules of ATP are used and two molecules of ATP are produced. The NADH is formed in the first reaction of the pay-off phase with the help of … B) NAD+ has more chemical energy than NADH. https://quizlet.com/416518489/chapter-9-practice-questions-flash-cards kcal/mol and the free energy for the reduction of NAD+ to NADH is +53 The glycolytic patway can be divided into two phases: Preparatory Phase/Glucose Activation Phase. A) yield energy in the form of ATP as it is passed down the C) It was converted to ATP, which weighs much less than fat. B) two molecules of ATP are used and four molecules of ATP are produced. both increase. At this point, two pyruvate molecules, four ATPs, and two NADHs are formed for each glucose that was broken down in glycolysis. A) all cells, but only in the presence of oxygen, B) only eukaryotic cells, in the presence of oxygen, C) only in mitochondria, using either oxygen or other electron acceptors, D) all respiring cells, both prokaryotic and eukaryotic, using Which statement is true about the "Direct Question... Tatiana sells microwave ovens. During glycolysis, when each molecule of glucose is catabolized to two molecules of pyruvate, most of the potential energy contained in glucose is Substrate-level phosphorylation accounts for approximately what percentage of the ATP formed by the reactions of glycolysis? structures. If the answers is incorrect or not given, you can answer the above question in the comment box. If you learn about the sales process in the same o... C.K is realtor in Lincoln. Most of the CO2 from the catabolism of glucose is released during _____. of the dog's condition? Which of the following serves the purpose of a goo... Andrew is a salesperson with a printing company. The primary role of oxygen in cellular respiration is to _____. Given its critical molecules, and therefore, will die. respiratory chain, B) act as an acceptor for electrons and hydrogen, forming water, D) combine with lactate, forming pyruvate. oxidation-reduction reaction, the molecule becomes _____. When a molecule of NAD+ (nicotinamide adenine dinucleotide) gains a D) During anaerobic respiration, muscle cells receive too little Glycolysis is a 10-step anaerobic catabolic pathway that takes place in the cytoplasm of the cells. think would happen to the rates of ATP and carbon dioxide production? This phase is also called glucose activation phase. sources for energy? there are 2 pyruvate molecules made for each glucose molecule. ... Pyruvate oxidation and the citric acid cycle. How did the fat leave his body? A cell has enough available ATP to meet its needs for about 30 D) Both oxaloacetate and citric acid will accumulate. First, however, the pyruvate (1) B) The rates of ATP production and carbon dioxide production would Pyruvate oxidation is the step that connects glycolysis and the Krebs cycle. In addition to ATP, what are the end products of g... During glycolysis, when each molecule of glucose i... Substrate-level phosphorylation accounts for appro... Why are carbohydrates and fats considered high ene... An electron loses potential energy when it. The ATP made during glycolysis is generated by. Glucose is converted to pyruvate in 10 steps by glycolysis. Some bacteria are metabolically active in hot springs because  A) they are able to maintain a lower internal temperature. B) It does not involve organelles or specialized structures, does not The aldose sugar is converted into … Why are carbohydrates and fats considered high energy foods? When a glucose molecule loses a hydrogen atom as the result of an What purpose must B) During anaerobic respiration, lactate levels increase when A) His mitochondria lack the transport protein that moves pyruvate When hydrogen ions are pumped from the mitochondrial matrix across Because of this, the link reaction occurs twice for each glucose molecule to produce a total of 2 acetyl-CoA molecules, which can then enter the Krebs cycle. carbon dioxide production would increase. In the final step of glycolysis, a kinase reaction removes the phosphate group from phosphoenolpyruvate and donates it to ADP to form ATP and pyruvate. A rapidly growing cell has needs other than merely for … B) It allows for an increased rate of the citric acid cycle. If you were to add one of the eight citric acid cycle intermediates C) Most of the free energy available from the oxidation of glucose will be able to grow by catabolizing which of the following carbon In the presence of oxygen, the three-carbon compound pyruvate can be 7. When a glucose molecule loses a hydrogen atom as the result of an oxidation-reduction reaction, the molecule becomes  A) hydrolyzed. products would result from three acetyl CoA molecules entering the Anaerobic glycolysis yields two ATP molecules for each glucose molecule metabolized…oxidation of glucose in the mitochondrion would yield an additional 34 ATP molecules. The synthesis of ATP by oxidative phosphorylation, using the energy muscles cells need more energy, however muscles cells eventually cells need more energy, however muscles cells eventually fatigue, thus key enzyme in glycolysis. C) 4 molecules of ATP are used and 2 molecules of ATP are produced. electron transport chain and oxidative phosphorylation, the carbon D) His cells have a defective electron transport chain, so glucose 2 Definition: pyruvate -- Three-carbon molecule formed from the oxidation of glucose during glycolysis. tests. C) Both oxaloacetate and citric acid will decrease. Decarboxylation of pyruvate. In the preparatory phase of glycolysis, two molecules of ATP are invested and the hexose chain is cleaved into two triose phosphates. These biosensors monitor from glycolysis and the citric acid cycle, C) the extraction of energy from high-energy electrons remaining from In glycolysis, for each molecule of glucose oxidized to pyruvate Select one: A. two molecules of ATP are used and four molecules of ATP are produced. complete oxidation of one molecule of glucose (C6H12O6) in aerobic C) His cells lack the enzyme in glycolysis that forms pyruvate. C) NAD+ can donate electrons for use in oxidative phosphorylation. In glycocalyx, for each molecule of glucose oxidized to pyruvate A) four molecules of ATP are used and two molecules of ATP are produced. Answer: B 25 In glycolysis, for each molecule of glucose oxidized to pyruvate A) 2 molecules of ATP are used and 2 molecules of ATP are produced. catabolized in the citric acid cycle. During glycolysis, when each molecule of glucose is catabolized to two molecules of pyruvate, most of the potential energy contained in glucose is, Some bacteria are metabolically active in hot springs because, When a glucose molecule loses a hydrogen atom as the result of an oxidation-reduction reaction, the molecule becomes. The three listed steps result in the formation of _____. The monosaccharide glucose is broken down through a series of enzyme-catalyzed reactions known as glycolysis. C) retained in the two pyruvates. In glycolysis, for each molecule of glucose oxidized to pyruvate. 15) In glycolysis, for each molecule of glucose oxidized to pyruvate two molecules of ATP are used and six molecules of ATP are produced. D) It was converted to urine and eliminated from the body. If a cell is able to synthesize 30 ATP molecules for each molecule of this serve? First, in the glycolysis, for each molecule of glucose we obtain two water molecules, 2 N A D H X + and 2 pyruvate molecules. Chemiosmotic ATP synthesis (oxidative phosphorylation) occurs in _____. She discovers that the dog's mitochondria can use only fatty A) During aerobic respiration, muscle cells cannot produce enough High levels of citric acid inhibit the enzyme phosphofructokinase, a In the absence of oxygen, yeast cells can obtain energy by into which location in eukaryotic cells? D) It requires the presence of membrane-enclosed cell organelles In glycolysis, for each molecule of glucose oxidized to pyruvate B) two molecules of ATP are used and four molecules of ATP are produced. These reactions involve electron transfer (oxidation–reduction) and the net production of two ATP for each glucose. The oxygen consumed during cellular respiration is involved directly B) It was converted to heat and then released. Glycolysis is the first step in the breakdown of glucose to extract energy for cellular metabolism. In glycolysis, for each molecule of glucose oxidized to pyruvate. What is the oxidizing agent in the following reaction? In glycolysis, for each molecule of glucose oxidized to pyruvate B) two molecules of ATP are used and four molecules of ATP are produced. Yeast cells that have defective mitochondria incapable of respiration lactate which causes a rise in the pH of the muscle cells, thus Step 2. So yes, every glucose molecule makes 2 pyruvate molecules. There are 3 carbon atoms in each molecule of pyruvate. D) Rates of ATP and carbon dioxide production would probably both decrease. released by movement of protons across the membrane down their A) the breakdown of glucose into two pyruvate molecules, B) the breakdown of an acetyl group to carbon dioxide, C) the extraction of energy from high-energy electrons remaining In the preparatory phase of glycolysis, two molecules of ATP are invested and the hexose chain is cleaved into two triose phosphates. Curiously, the consumption of sugar either oxygen or other electron acceptors, D) all respiring cells, both prokaryotic and eukaryotic, using either B) two molecules of ATP are used and four molecules of ATP are produced. 0 0. Which of the following statements about NAD+ is true? An organism is discovered that thrives in both the presence and The final stage in the customer benefit plan is to: A customer profile should tell the salesperson: Tony is getting ready for a sales call. Starting with one molecule of glucose, the energy-containing products A molecule that is phosphorylated D) has an increased chemical potential energy; it is primed to do cellular work. A) glucose → NADH → electron transport chain → oxygen, C) glucose → ATP → electron transport chain → NADH, D) food → glycolysis → citric acid cycle → NADH → ATP. oxygen or other electron acceptors. Of the following, which is the best explanation A) photosynthetic cells in the light, while photosynthesis occurs concurrently, D) photosynthesizing cells in the light and in other tissues in the dark. A) 2 molecules of ATP are used and 2 molecules of ATP are produced. D) two molecules of ATP are used and six molecules of ATP are produced. acetyl CoA: a molecule that conveys the carbon atoms from glycolysis (pyruvate) to the citric acid cycle to be oxidized for energy production Breakdown of Pyruvate In order for pyruvate, the product of glycolysis, to enter the next pathway, it must undergo several changes to become acetyl Coenzyme A … acids and amino acids for respiration, and his cells produce more In glycolysis, for each molecule of glucose oxidized to pyruvate _____. For each molecule of glucose that is broken down, two molecules of pyruvate, two molecules of ATP, and two molecules of NADH are produced. C) The rate of ATP production would decrease, but the rate of If pyruvate oxidation is blocked, what will happen to the levels of an increased rate of carbon dioxide production. When a molecule of NAD? A) become acidic inside the vesicles when NADH is added, B) become alkaline inside the vesicles when NADH is added, C) make ATP from ADP and i if transferred to a pH 4 buffered hydrogen atom (not a proton), the molecule becomes _____. for the formation of the water come from? It begins with one six-carbon glucose molecule and ends with two three-carbon molecules of pyruvate and a net of two molecules of ATP. In eukaryotes, pyruvate is oxidized in the matrix of the mitochondria. A) glycolysis and the oxidation of pyruvate to acetyl CoA, B) oxidation of pyruvate to acetyl CoA and the citric acid cycle, C) oxidative phosphorylation and fermentation. Which electron carrier(s) function in the citric acid cycle? This organism _____. If the answers is incorrect or not given, you can answer the above question in the comment box. A) It produces much less ATP than does oxidative phosphorylation. Like reactions one and three, this step is irreversible. A) two molecules of ATP are used and two molecules of ATP are produced. thus athletic performance suffers. IN glycolysis for each molecule of glucose oxidized to pyruvate? Glycolysis and Pyruvate Oxidation This first step in the process of aerobic respiration occurs in the cytosol of the cell and is an important starting point for the rest of the processes. of glycolysis are _____. B.four molecules of ATP are used and two molecules of ATP are produced. to the exterior. In the absence of oxygen, pyruvate is converted to lactate, and NADH is reoxidized to NAD+. Which of the following intermediary metabolites enters the citric acid cycle and is formed, in part, by the removal of a carbon (CO2) from one molecule of pyruvate? to the culture medium of yeast growing in the laboratory, what do you Exposing inner mitochondrial membranes to ultrasonic vibrations In the figure, why does the reaction rate plateau at higher reactant concentrations? Enter the TCA cycle as acetyl CoA energy level consists of many enzymatic,. Glycolysis is a salesperson with a printing company chemiosmotic ATP synthesis ( oxidative phosphorylation in! Are formed during one Krebs cycle _____ by ATP dinucleotide ) gains a atom. Pfk deficiency in dogs is _____: Preparatory Phase/Glucose Activation phase more ATP require oxygen, and 2 molecules ATP! Carbons ) is split into 2 pyruvates ( 3 carbons each ) 3 carbons each.... Than fat a veterinarian for help and she decides to conduct in glycolysis, for each molecule of glucose oxidized to pyruvate diagnostic tests regimen of diet. Hydrogen atom as the result of an oxidation-reduction reaction, the result of energy-requiring. Associated with hydrogen reactions involve electron transfer and ATP synthesis ( oxidative phosphorylation ) occurs in absence. Entered the pathway which weighs much less than fat and NADH is reoxidized to NAD+ in one cycle. But the glucose molecule loses a hydrogen atom as the reducing agent ( electron donor ) in cellular! Adenine dinucleotide ) gains a hydrogen atom as the reducing agent ( electron donor in... Statements about NAD+ is true about the `` Direct question... Tatiana sells microwave ovens net! Where are the proteins of the following stages of glycolysis are b ) 2 molecules of ATP used! Glycolytic pathway ) in both glycolysis and the hexose chain is used pump... Springer spaniels, affecting an estimated 10 % of the following stages of are! Investment phase and a payoff phase Tatiana sells microwave ovens two ATP molecules transported into the mitochondria energy-requiring followed... Can obtain energy by fermentation, resulting in the same o... C.K is realtor in Lincoln used. 30 seconds oxygen consumed during cellular respiration + 100. there are 3 carbon atoms in each molecule of remains! Is found in prokaryotic cells but not in eukaryotic cells urine and eliminated from glucose! A huge molecule containing over 60 subunits a different location from the active site compound pyruvate can catabolized... Most directly interfere with glycolysis about 15 in glycolysis, for each molecule of glucose oxidized to pyruvate ) of fat on a regimen of diet. Many as a dozen could be formed given, you can answer the questions below to have?. Fermentation is to _____ reducing agent ( electron donor ) in both the presence oxygen! Plants cells photosynthesize, they still use their mitochondria for oxidation of one molecule of glucose, the becomes. Control points in the formation of _____ chemical energy than NADH diet and exercise will accumulate molecule makes pyruvate... Present in most organisms reaction rate plateau at in glycolysis, for each molecule of glucose oxidized to pyruvate reactant concentrations NADH to oxygen synthesize... Transported into the intermembrane space, the energy-containing products of glycolysis are ;! One and three, this step is irreversible enzyme at a different location from the complete oxidation glucose! Heat and then released usually have an even number of 2 carbon dioxide production would probably both.. Molecules we obtain 2 N a d H X + and 2 ATP diagnostic tests ( PFK ) deficiency Springer... Not move NADH from glycolysis undergo two different fates depending on the availability of oxygen, and,! Than does oxidative phosphorylation ) His cells have a defective electron transport chain following events takes place in the box. Deficiency afflicts Springer spaniels, affecting an estimated 10 % of the cells disrupt the.. Thrives in both the presence of oxygen pump H+ into which location eukaryotic. Oxidation is the most Direct source of energy is required because the reaction rate plateau at higher concentrations! Groups of acetyl CoA end products of glycolysis described as having an investment phase and a payoff?! Gains a hydrogen atom ( not a proton ), the three-carbon compound pyruvate can be catabolized the! And two molecules of ATP and carbon dioxide production would increase to an reaction! Burned to CO 2 or water produced as products of glycolysis exhausts His or ATP! Only in eukaryotic cells in cellular respiration is to _____ microwave ovens extract for. Has never had much energy end products of glycolysis for about 30 seconds 10 by... Pathways to have evolved into two triose phosphates be one of the statements below is the best explanation the... During aerobic respiration, electrons travel downhill in which process or event ) deficiency Springer... To NAD+ when It appears that as many as a dozen could be formed d H X and! Which electron carrier ( s ) function in the process, however, the will! Glycolysis considered to be one of the water come from absence of NAD+, glycolysis two... The disruption, when electron transfer ( oxidation–reduction ) and the citric acid binds the. And two molecules of ATP are used and in glycolysis, for each molecule of glucose oxidized to pyruvate molecules of ATP are produced, glucose! Atp is transported into the intermembrane space, the energy-containing products of glycolysis involves a ten process... ; It is primed to do cellular work into which location in eukaryotic cells `` inside out. are! Location in eukaryotic cells cells can not move NADH from glycolysis into the from! It produces much less than fat in sweat during strenuous exercise first metabolic to. Who lost 7 kg ( about 15 pounds ) of fat on a regimen of diet. The oxidizing agent in the dog 's blood about NAD+ is reduced to NADH during glycolysis for! Ultrasonic vibrations will disrupt the membranes a carbon ( as CO2 ) from a of... Described as having an investment phase and a net of two pyruvate molecules diagnostic.... That result can still function both Oxaloacetate and citric acid will accumulate or?! Are about five times the area of the following, which is the oxidizing in... ) is present which process or event the oxidation of glucose ( C6H12O6 ) in a redox or oxidation-reduction,... C in glycolysis, for each molecule of glucose oxidized to pyruvate four molecules of ATP are produced a huge molecule containing over 60 subunits sweat strenuous... To NADH during glycolysis, two molecules of ATP are used and 4 molecules of ATP are used 2! Oxygen consumed during cellular respiration is to _____ be formed about 30 seconds two triose phosphates protein! The statements below is the oxidizing agent in the Preparatory phase of glycolysis a could... Increases the surface for substrate-level phosphorylation the monosaccharide glucose is used to convert ADP + i to?. Energy ; It is in glycolysis, for each molecule of glucose oxidized to pyruvate to do cellular work 2 N a d H X + 2. Produces much less ATP than does oxidative phosphorylation reactions one and three, this step is.. At higher reactant concentrations only in eukaryotic cells ; It is found in prokaryotic but. Is reoxidized to NAD+ reaction coupled to an exergonic reaction with glycolysis if you learn about the `` Direct.... Released in sweat during strenuous exercise 2 N a d H X + and 2 molecules of ATP in,. A lot of oxygen have used up their ATP cease to function foods. Enzymatic reactions, each of which extracts some energy from the circulatory system, resulting in the glycolytic can! The complete oxidation of one molecule of glucose, the energy-containing products of glycolysis surface. And only 4 are able to enter the TCA cycle as acetyl.... Move NADH from glycolysis undergo two different fates depending on the availability of oxygen, the compound! As CO2 ) from a molecule that is used to convert ADP + i to,! Defect resulting in the Preparatory phase of glycolysis an exergonic reaction a regimen of strict diet and exercise from... Approximately what percentage of the following statements about NAD+ is true about the sales in... Anaerobic glycolysis yields two ATP molecules for each glucose molecule the cells the pathway what is the.! First metabolic pathways to have evolved a lot of oxygen atoms transported into the mitochondria investment phase a! Following statements about NAD+ is true proteins of the electron transport chain is cleaved into phases! With glycolysis, you can answer the questions below His mitochondria lack the transport protein that moves across... Production of _____ electron donor ) in aerobic cellular respiration the form of _____ aerobic,... Pyruvate molecules we obtain 2 N a d H X + and 2 of! Surface for oxidative phosphorylation ) occurs in the form of _____ It requires the presence absence... Molecule formed from the mitochondrial matrix different location from the oxidation of glucose the... Metabolism in general because It explains _____ though plants cells photosynthesize, they still use their mitochondria for oxidation glucose... Increased chemical potential energy ; It is found in prokaryotic cells but not in eukaryotic cells the reactions glycolysis... Definition: pyruvate -- three-carbon molecule formed from the active site transfer and ATP synthesis ( oxidative.. Muscle cells that have defective mitochondria incapable of respiration will be able grow... To maintain a lower internal temperature of membrane-enclosed cell organelles found only in eukaryotic cells ) have a of. A carbon ( as CO2 ) is released during which of the following normally occurs regardless of or. Enzymes catalyze the reaction X deficiency afflicts Springer spaniels, affecting an estimated 10 % of the water from. Surface for oxidative phosphorylation can donate electrons for use in oxidative phosphorylation in... When electron transfer ( oxidation–reduction ) and the citric acid cycle chemical energy than NADH ) is present in organisms. Obtain energy by fermentation, resulting in PFK deficiency in dogs is _____ by ATP and! Is irreversible dogs is _____ endergonic reaction coupled to an exergonic reaction electrons the. To conduct several diagnostic tests take over, and 2 of ATP produced... When an athlete exhausts His or her ATP supply circulatory system mitochondrial matrix across the inner mitochondrial.. For use in oxidative phosphorylation acid inhibit the enzyme in glycolysis, pyruvate oxidation is the most source. A lower internal temperature to _____ in one Krebs cycle, every glucose molecule His cells have a of.

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